package com.itheima.reggie.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.Result;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishDto;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishFlavorMapper;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired private DishMapper dishMapper;

    @Autowired private DishFlavorMapper dishFlavorMapper;

    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    @Override
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        LocalDateTime now = LocalDateTime.now();

        Long dishId = dishDto.getId();//菜品id
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishId);
            item.setCreateTime(dishDto.getCreateTime());
            item.setUpdateTime(dishDto.getUpdateTime());
            item.setCreateUser(dishDto.getCreateUser());
            item.setUpdateUser(dishDto.getUpdateUser());
            return item;
        }).collect(Collectors.toList());

            //保存菜品口味数据到菜品口味表dish_flavor
            dishFlavorService.saveBatch(flavors);

    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);

        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        List<Long> dishs = new ArrayList<>();
        dishs.add(dishDto.getId());
        dishFlavorService.deleteByDishIds(dishs);

        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            item.setUpdateTime(dishDto.getUpdateTime());
            item.setUpdateUser(dishDto.getUpdateUser());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }

    @Override
    @Transactional
    public Result<String> deleteList(List<Long> ids,Long user) {

        LambdaQueryWrapper<Dish> countQueryWrapper = new LambdaQueryWrapper();
        countQueryWrapper.in(Dish::getId,ids);
        countQueryWrapper.eq(Dish::getStatus,1);

        int count = count(countQueryWrapper);
        if(count>0){
            return Result.error("有菜品在启用，不给删除");
        }

        LocalDateTime now = LocalDateTime.now();
       dishFlavorService.deleteByDishIds(ids);
       dishMapper.removeIds(ids,now, user);
        return Result.success("删除成功");
        //dishFlavorService.ge
    }

    @Override
    public void editStatus(Integer status, List<Long> ids,Long user) {

        dishMapper.editStatus(status,ids,LocalDateTime.now(),user);
    }

    @Override
    public List<JSONObject> selectVegetableAnalysis() {

        return dishMapper.selectVegetableAnalysis();
    }
}
